refactor: Modular inbounds/outbounds

protocol/naive/quic/inbound_init.go

@@ -0,0 +1,52 @@
+package quic
+
+import (
+	"io"
+	"net/http"
+
+	"github.com/sagernet/quic-go"
+	"github.com/sagernet/quic-go/http3"
+	"github.com/sagernet/sing-box/common/listener"
+	"github.com/sagernet/sing-box/common/tls"
+	"github.com/sagernet/sing-box/protocol/naive"
+	"github.com/sagernet/sing-quic"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/logger"
+)
+
+func init() {
+	naive.ConfigureHTTP3ListenerFunc = func(listener *listener.Listener, handler http.Handler, tlsConfig tls.ServerConfig, logger logger.Logger) (io.Closer, error) {
+		err := qtls.ConfigureHTTP3(tlsConfig)
+		if err != nil {
+			return nil, err
+		}
+
+		udpConn, err := listener.ListenUDP()
+		if err != nil {
+			return nil, err
+		}
+
+		quicListener, err := qtls.ListenEarly(udpConn, tlsConfig, &quic.Config{
+			MaxIncomingStreams: 1 << 60,
+			Allow0RTT:          true,
+		})
+		if err != nil {
+			udpConn.Close()
+			return nil, err
+		}
+
+		h3Server := &http3.Server{
+			Handler: handler,
+		}
+
+		go func() {
+			sErr := h3Server.ServeListener(quicListener)
+			udpConn.Close()
+			if sErr != nil && !E.IsClosedOrCanceled(sErr) {
+				logger.Error("http3 server closed: ", sErr)
+			}
+		}()
+
+		return quicListener, nil
+	}
+}